Bias in the ballot: how votemandering exploits gerrymandering and campaign strategies

Sanyukta Deshpande (), Ian G. Ludden and Sheldon H. Jacobson
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Sanyukta Deshpande: University of Illinois Urbana-Champaign
Ian G. Ludden: Rose-Hulman Institute of Technology
Sheldon H. Jacobson: University of Illinois Urbana-Champaign

Annals of Operations Research, 2025, vol. 352, issue 1, No 5, 168 pages

Abstract: Abstract Gerrymandering—the deliberate manipulation of electoral district boundaries for political advantage—is a persistent challenge in U.S. elections. In this work, we introduce and analyze Votemandering, a strategic blend of gerrymandering and targeted political campaigning devised to gain more seats by circumventing fairness measures. Votemandering leverages accurate demographic and socio-political data, bolstered by advancements in technology and data analytics, to influence voter decisions in pursuit of subtle gerrymandering strategies. We formulate votemandering as a Mixed Integer Program (MIP) that performs fairness-constrained gerrymandering over multiple election rounds. We analyze the influence of various redistricting constraints and parameters on votemandering efficacy. We explore the interconnectedness of gerrymandering, substantial campaign budgets, and strategic campaigning, illustrating their collective potential to generate biased electoral maps. A case study of Wisconsin State Senate redistricting reveals significant votemandering potential. Our findings underscore the need for reforms in the redistricting process beyond enforcing thresholds for specific fairness metrics.

Keywords: Political redistricting; Partisan gerrymandering; Local optimization; GOTV campaign (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s10479-025-06748-9

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